Issues

Magnetic measurements suggest that a process akin to Earth's seafloor spreading once operated on Mars.

A new design efficiently converts heat into useful work without any moving parts.

You can control the flow of electrons in a quantum dot by cyclic changes in the wavefunction.

If you can measure a parts‐per‐million parity violation in the elastic scattering of electrons off protons with enough precision, you get to look at the strangeness structure of the proton. These demanding experiments are under way at accelerators old and new.

Quantum computers have the potential to do certain calculations faster than any foreseeable classical computers, but their success will depend on preserving complex coherent quantum states. Recent discoveries have shown us how to do that.

Using ultrafast laser pulses and magnetic fields, electron‐hole pairs in semiconductors may be carefully manipulated, and electron spin states can be preserved over surprisingly long times and distances.

A resurgence of theoretical and observational interest in black holes has given new impetus to the study of these intriguing objects.